Piston-valve.



1. 1. Rossem PISTON VALVE.

APPLICATION FILEI UEC. 22. |916.

lPatensd Dec. 1l, 1917.

LN' VEA'TUR.

JTTORNE I".

Heron-VALVE.

To all 'whom it may concern.' Be 'it knownthat I, JOHN J.Ro i isoN, a citizen of the United States, residing at St. Louis, State of Missouri, here invented-'oer- '-taiiinew and useful Improvements in Piston-Valves, of whiehthe-following is wfull,

.5 clear fund veirnet. description, reference be- .irig

forming fully set forth in the specification .and pointed out in the clnims.

ad; to. the accompanying drawings, ai part hereof. I My invention has relation to improvements in piston-valves; and it 'consists in the `novel lfeatures 4of construction more The present invention is'in the mein directed. to'iinprm-'einentg in piston-valves for gasolene :ind explosive engines genemlly, though not necessarily restrictedthereto. The-object of the invention is suoli a vnlre with 'suitable puclcingrings, nt the saine tinie niuinteining between the rii-i s and the ports controlled ,by the valve sue a relation us to nmke it impossible for the rings to enter the ports und thereby impede the movements of the vulve. The edviintuges of the invention will be fully apparent from the following detailed description .in connection with the accompanying Fig f l represents n middle longitudinal seotioi'i. view o1 :1n explosive engine c rlinder und vulve raising,- with seetiounl views of the v-.rlve-uetuatin'g meehunisni, pui-ts being in elerution ;A Fig. 2 e eoinbinmlorosssection and lain on the zig-zug line Z-Q of Fig. 5; Fig. 3 is u' detached elevational .View of the piston-vulve, ports being in seetion; Fig. 4 'is un end View ofthe pistonvnlve stein and bottom piun oi.' the disk which servesiis zi bearing for the eoutrolling s ring, Fig. 5 is n side elevation of the vn ve with easing partly broken euery;

and Fig. 6 is e' sectioinil view of un origine "present to igs'l to 5 valves, ono'of `thein cylinder showing the npplieetion of two )ring the intarke and the other the exhaust valve.

Referrinmto the driiwinvs, sind for the inclusive, 1, represents the cylinder' of a conventional explosive engine, 2 the 'iiston thereof, and 3 the spark-plug its wel understood inthe art. In this type of engine the intake vulve is in 'alineinent'witli the 4spoilt-plug, such valve' being either of the pulppet or piston vnriety as fully understoo 1n the nrt. A piston-vulve without packing rings is open'to Specification of Letters Pstent.

.wherein the piston-vii to" provide nients of the valves.

lsion chamber.

of 'my invention I provide the -neoessiiry,-

i V1.00 extendingr thein. radially' outward beyond tlie eriph'ery of the l by' t eysforni :i series o f ribs 4(inthe-outsidev 'fren STATES 13A-TENT OFFICE.

, '1 i JOHN J. nossoN, or str noqlsfmgissqpnr l the objection leiikviige', end .ithepu-pplet valve requires frequent regi'indin 'to 1n- Patented Dee. 11,1917. .Application lerdDe'cemb'er 22, 1916. Serial No. 18B,0l 5. i

sure proper seating. These "objections1erev4 overeoi'ne by my present improvement ve 4 is providedr Vwith one or more packing rings ,5. of-tlie well rooves a. on ,the periph- Fi'g. 3),@ The Vpeeking fit,v between l.the

rings while insuring fir-tightI valve. enduits? ,cylinder or' `c lusing i' G, require a special disposition of ports 4o in' order thiit theeprnbincd z i'reey of the ports shallbe snfli- Iy Y Veie'nt toV aeeon'in'io'date the explosive mixture of air and gus where un intsile -Yiil-vels eoneerned, or to accommodate the exhaust grises where un exhaust vnlv'e is concerned. T heports must hure .alongitu'dinnl diinen-` sion (that is, irdiu'iension' pnrallelfto'the axis ot' the valve or nxis of the 'vulve bylinder) in excess oll the width ofthe groove a v or the peeking ruig 5, nud their number niust be suilieient to provide fthe' required number ot' p-.irt-itious or division walls lui between the ports to eng-.ige of the pecking rings ber ot' points to prevent the rings from enf lering the ports ln other words, there n'iust be suiile'ient number ofl pnrtitions w between tlie/eirculzirly disposed ports" 0 to prevent the pueking'rings 5 from spieuding.

the outer feces' :it n si'iflielentnum-V and impeding the move- This iieeessurily results in niuteriul'ly redue.4

ingr the thickness or eireulnrdimension 'ol the pintition; and since in this type' of engine n eonsidernble degree of heut is drveloped in the region of the spark-.plug and vulve, soiue provision must be mude to give the partitions fw sufficient body t0 prevent the sume from being by the exeessive temperaturein the explo- In` the present embodiment body oi" cross-seetion for the partit-ions' by vulve cylinder,

of. thevulve cylinder us shown in F152, 1. 105, This orrimgeinent dis-' these ribs `having :imple eross-seotionjto withstand the lient.

penses with the necessity of. inerensiii r the:

thielcness of the vulve-cylinder wells, t ereby reducing the right` of nietul entering into tbe'ensting forming the the piston and piston valve. jor-ity of valves of this-class,

Like the inadestroyed or burnt out cylinders for theihereshown f is actuated in one direction by a cam 7 on the cam-shaft 8, and intermediate connections shoivn in Fig. 1 and well understood in the art, and in thtA opposite direction by a spring 9 whose lower end is supported on the movable abutment or disk 10 resting on a split ring 11 carried in an annular groove near the bottom of the valve-stein 12.

In Fig. 6 is shown a portion of an engine cylinder C showing the application of two valves V and V (intake and exhaust respectively), the valves being in axial alineinent, and in this respect differing from the arrangement shon'n in Fig. 1 where the exhaust valve (not shown) is behind the intake. The invention is of Course not restnicted to piston valves (intake or exhaust) of explosive engines, but may be applied to piston valves generally. Features shown but not alluded to are ivell understood in the art and require no description in the present Connection. The operation is the same as that of any other valve in the type of engine here illustrated and need noty be repeated herein, the invention being)r concerned merel)7 with the valve and its easing.

iackino rinoV and t: r:

Having described my. invention What I claim is:

In eoml'iination with a piston-valve pro vided with peripherally disposed annular resilient packing rings, a casing or cylinder having walls provided with a series of oirenlarly disposed ports across which the valve reciproeates, the partitions between the successive ports being extended radially beyond the periphery of the valve cylinder a distance suieient to give them the liceossary body to withstand the heat., the dimensions of the ports in the direction of the valve axis being elongated and in excess of the width of a paoking'ring and substantially equal tothe thickness of the piston1 and the number of ports being such as to afford a sntlioient number of partitions to engage a prevent the latter from entering the ports.

In testimony whereof l ailix my signature. in ]'resent'e of two Witnesses.

JOHN J. RORQO. Vi'litnesses EMIL STAREK, ELsn M. SIEGEL. 

